Duesenfeld GmbH

Duesenfeld is a pioneer in the recycling of lithium-ion batteries and has developed processes that do not require the battery modules to be melted down or heated, which was initially standard practice. From the very beginning, our processes have focused on environmental friendliness, CO2 avoidance and high recycling efficiency.

As a spin-off of the TU Braunschweig, Duesenfeld has entered into collaborations with other universities and research institutes such as the TU Clausthal, from which hydrometallurgical processes have been developed and patented. Other processes have been developed directly by Duesenfeld, for which patents have been applied for and granted. The LitoRec recycling process is based on patents held by Duesenfeld GmbH.

The Duesenfeld process with mechanical crushing of the batteries and hydrometallurgical processing of the black mass is a low-temperature process. During the mechanical crushing and inactivation of the batteries, drying takes place below 80°C and in a vacuum - only under these conditions is no exhaust gas scrubbing necessary and only in this temperature range can the electrolyte be recovered in such purity that it can be reused. With this technology, Duesenfeld combines environmental friendliness with economic efficiency.